One-piece folded sheet-metal sap-receptacle.



C. STOLLBBRG. ONE PIECE FOLDED SHBET METAL sAP EEGEPTAGLE.

APPLIOATION PILED SEPT. 14, 1908.

1,126,121. Patented Jan. 26, 1915.

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2 SHEETS-SH-EET 1.

THE N DDDDDD FTERS CO.. PHDTO-LITHO.. WASHNGON. D. C

C. STOLLBERG.

ONE PIEGE FOLDED SHEET METAL SAP RBGEPTAGLE.

APPLIGATION PILED SEPT. 14, 1903.

1,126,121 Patented Jan. 26, 1915.

I 2 SHEETS-SHEET 2. E 7 [i Y Y N d 77115265565 Ivvr THE NORRIS PETERS Co.. PHOTDJJTHO., WASHING roN. D. c.

UMTED STATES PATENT OFFICE.

CHARLES STOLLBERG, OF ToLEDo, OHIO, ASSIG-NOR TO AMERICAN CAN COMPANY, OF

NEW YORK, N. Y., A CORPORATION OF NEWV JERSEY.

ONE-PIECE FOLDED SHEET-METAL SAP-RECEPTACLE.

mes m.

Specificaton of Letters Patent.

Patented Jan. 26, 1915,

original application filed April 6, 1908, Serial 7010 425498. Divded and this application filed September 14,

To all whom 'it may concem Be it known that I, CHARLES STOLLBERG, a citizen of the United States, residing in To ledo, in the County of Lucas and State of Ohio, have invented a new and useful Improvement in One-Piece Folded Sheet-Metal Sap-Receptacles, of which the following is a specification.

My invention relates to one piece sheet metal folded turpentine collecting cups or sap receptacles. i

Heretofore it has beeninpossible to make durable and satisfacto y one piece folded sheet metal turpentine collecting cups of galvanized sheet iron or steel either out of previously or commercially galvanzed sheets or out of plain blacksheets and sub- -sequently galvanizing the cup or Vessel after it is folded and formed up into shape. Because, if on the one hand, it is attempted to make the cup of ordinary galvanized sheet iron or steel, the sharp bending and folding of the sheet causes the ordinary galvanizing coating or spelter to flake or scale off during the folding or forming operation at the sharp bends or folds, and especiall at the .bottom corners of the Vessel where the angle folds come to a sharp point and where the stock receives more or less of a twist in addition to its sharp bends or folds; so that the Vessel will speedily rust through on exposure to the weather in use, at the folds and corners where the spelter coatng is fiaked ofi', and thus become leaky and useless. And because, if on the other hand, it is attempted to make the cup of an ordinary black iron or steel sheet and do the galvanizing or spelter coatingafter the cup is folded and a forned up into shape, the confined pockets of the pickling bath,

produced by the angle folds and looking lips of the folded Vessel will cause the interior surfaces `of such folds or pockets to be imperfectly clea ned or brightened by the acid to be imperfectly washed free from the pickling acid in the subsequent washing step and to be imperfectly coated by the spelter in the final step of the galvanizing process; so that the galvanized foldedcup thus produced will speedily rust through and become' leaky and worthless, the destruction being doubtless c'hiefly due to the acid of the pickling bath I (which`is` confinedin or between the angle folds" and' impossble of complete removal,)

the fiat and prior half ounces to the square 'enbodying my invention turpentine bearng tree.

Serial No. 4523370.

attacking the iron or steel and causing speedy rusting and destruction of the Vessel.

The object of my invention is to provide a one piece folded sheet metal sap receptacle of gal'vanized iron or steel in which all parts of the receptacle, inside and out, will have a galvanizing or spelter coatng, and be efficient and durable and protected from rusting through or deterioration on eXposure to the weather.

I have discovered that this object or result can be practically acconplished by making the one piece folded sheet metal re ceptacle out of galvanized sheet iron or steel in which the galvanizing or spelter coating is extraordinarily thin, preferably less than half the thickness of the coating ordinarily found upon commercial galvanized sheet iron or steel, such thin spelter coating being applied to the sheets while they are in to the forming and folding of the receptacle therefrom. I have discovered and demonstrated by experiment and practical use that a one piece folded sap receptacle of galvanized sheet iron or steel in which the galvanizing or spelter coating is reduced from the customary two and a foot as ordinarily used, to one ounce or one and a quarter ounces per square foot, that all parts of the sheet after it is folded into the receptacle will remain fully and perfectly covered and coated by the spelter at the sharp corners and folds, as well as elsewhere, and without any tendency to flake off. And as in my invention the thin, bendable, nonfiakable galvanizing or spelter coating is applied to the black sheet prior to the fornation of the receptacle, the angle folds and other confined pockets of the receptacle are not only fully and perfectly coated with the spelter, but the difiiculty arising from the rusting through of these parts by reason of imperfect washing or removal of the pickling acid, is entirely done away with.

In the accoinpanying drawing forming a part of this specification, Figure l is a front elevation of a one piece folded galvanized sheet steel or iron sap receptacle as applied to the Fig. 2 is a Vertical cross section on line 2-2 of Fig. l. Fig. 3 is a section on line 3-3 of Fig. 2. Fig. t is an end elevation. Fig. 5 is a section on line 5--5 of Fig. 4:. Fig. 6 is a detail view showing the sheet metal blank from which the one piece folded receptacle is formed. Fig. 7 shows the blank in a' partially folded condition and Fig. 8 is an enlarged detail section showing the galvanizing coating or spelter on the iron or soft steel sheet and Fig. 9 is a cross sectional view showing' the difference in thickness between the spelter coating which I employ, and that ordinarily found upon commercial galvanized sheet steel or iron.

Fig. 10 is an end view and Fig. ll is a vertic'al cross section illustrating a modification in which the looking lip's d* are located on the flaring ends (l instead of on one of the angle folds (Z and in which the supporting hook is formed on one of the upright sides of the vessel and integral therewith. y

In the drawing i\ represents a portion of a turpentine hearing or other sap bearing tree is inserted a sheet metal apron B of any suitable kind or Construction, and D is my improved galvanized sheet iron or steel one piece folded sap receptacle. The apron B is preferably of galvanized sheet steel, and 'is furnished with an upper concavely curved 'edge I) adapted for` insertion in the cut or incsion a of the tree. At its ends the galvanized sheet steel apron B ispro-` vided with divergent upwardly projecting end flanges b each of which may be provided at its upper part with a downwardly extending inclined slotor notch 6 to receive a Wii-e or other hook C with which the receptacle D is or may be provided to reinovably support said vessel from the apron. The sheet metal apron B is composed 'of an iron oi' steel sheet B having on both sides a galvanizing or sp'elter coating 13 The one piece folded galvanized sheet steel receptacle D is preferably of a long, narrow, deep form, and consists of an integral fiat rectangular bottom d, substantally upright, but slightly fiaring sides (l and widely fiaring ends (Z and angle folds d and locking lips d* for holding or clamping the angle folds snugly against the fiarng ends of the vessel. The one piece folded sap receptacle D is composed of sheet steel or iron'D having upon both sides an extremely thin galvanizing or spelter coating D said coating being preferably in thickness or amount about one ouhoe to the square foot, although it may vary sonewhat therefrom in extent. The galvanizing coating or spelter D is applied to the soft sheet steel or blank in the fiat and before it is formed or folded into shape, the extreme thinness or tenuity of the spelter coating enabling' the required angle folds and bends to be -formed without causing the coating in the cut or incision a of which i D to flake or break oif at the corners or folds. The receptacleD is provided with hooksj or 'supporting' devices' C of suitable form for engageient with the hooks or s pp ngvd v s 12. On the p The. interengaging hooks or supporting devices on the apron and receptacle may be of any suitable kind or Construction, and I have in the drawing* simply illu'strated one form of such hooks or supporting devices to enable my invention to be more fully understood.

The relative' thiclniess of the' galvanizing o'ating or spelter D employed` inmy invn'tion as Compared with the ordinary speltr or galvanizing cating' ordinarily found on galvanized sheet steel or iron, will b'e readily undrs'to'od by those s'lilled in the art from Figs. 8 and 9 of the drawing. In Fg. 8, F represents an iron oi." steel sheet' and I the ordinary splter oi" galvanizing coating thereon. y r h My spelter o'r galvaniziig 'coati'ng' D is a bendable non-fiakable' coating, and differs in this important respect; as well as in its eXtrenie thinne's's fr'rn the sp'elter er galvanizing coat-ings i heretofore found on galva'i'izediron or steel she'ets.

This application is 'a divisionof my original application, Serial Noi' 425 ft98, filed Aprilth, 1908, now Pate'nt 15048354 ss'u'ed December 31,;1912; I p

I hereby diselaim the use of such' galvanzing eoatings as be 'produced by the means disclosed or described in the atents to Cook, No. 590365, to' Peake Ne. 92,998, to Sirmay No. 736,565,gto Classefi 8095492 and to Braddock No. 645520. The galvanizing coating whichI use; and which I have found by experimenta that it is necessary to employ topractically produce my improved galvanized 'shet steel, 'long nari'ow, deep one piece folded turpiitine cup, having sharp fiat folds in the stock at the 'angle fold members and sharp twists in the stock at the apiees of the angle folds and "c'ohirs of the cup, is a coating of xtraordinary thinness produced by ro'llingth freshly galvanized sheets as they issue from the spelter i'eceptacle, between 'olls under ;very great prss'ure; The extrardinarily ,thin rlled 'and heavily compressed spelter 'oi' galvanizing coating which I empoy on the steel sheets in the inaking ofniy improved 'cup is materiauy different from that produj d b and is incapable of beingprodubea by the ineans shown and described'in the Patents above mentioned.

1. A long, deep', narro'w, oiie piece, folded sap receiving receptacle 'o'f galvanied sheet iron or steel, coinprisin'g a sheet steel member having integral bottom, upri'ght sides, aring en'ds and inte ral angle folds', and having sharp' fold in the sheet metal 'a the joints of said members and sharp twists in the sheet metal at the apeX of the angle folds and bottom corners of the receptacle, said sheet steel member being provided, throughout its corners, bends, twists and angle folds as well as elsewhere of its surfaces, With an extraordinarily thin, dense, bendable and non-flakable spelter or galvanizing coating, substantially as specified.

2. A long, deep, narrow, one-piece, folded sap receiving receptacle of galvanized sheet iron or steel, conprising a sheet steel member having integral bottom, upright sides, fiaring ends and integral angle folds, and having sharp folds in the sheet metal at the joints of said members and sharp twsts in the sheet metal at the apeX of the angle folds and bottom corners of the receptacle, said sheet steel member being provided, throughout its oo'ners, bends, twists and angle folds as well as elsewhere of its surfaces, With an extraordinarily thin, dense, bendable and copies of this patent may be obtained for five cents each, by addressng the non-flakable spelter or said spelter or galvanizing coating being in amount substantially about one and one %uarter ounces of the smelter to the square "oot.

3. A one-piece folded sheet metal turpentine collecting cup or receptacle, having integral bottom, sides, ends and angle folds and having sharp fiat folds in the sheet metal at the junction of said members, and sharp twists in the sheet metal at the apeX of the angle folds and bottom corners of the receptacle, and conposed of sheet steel provided With an extraordinarily thin, dense, bendable and non-flakable spelter coating on both surfaces extending throughout and over the bends, folds, twists and corners as Well as elsevvhere, substantially as specified.

CHARLES STOLLBERG.

Witnesses:

H. M. MUNDAY, WILLIAM A. GEIGER.

"Commissioner of Patents,

washington, D. C.

galvanizing coating, 

